ALERTS: A winter weather advisory is posted for Nassau and Suffolk Counties, effective from 10 p.m. Saturday through Sunday morning for two to four inches of snow.

Most of Long Island is expected to get two to three inches of snow, but some isolated four-inch amounts cannot be ruled out. It will be important to clean up the snow as quickly as possible on Sunday. Whatever snow is not cleaned up can become more icy Sunday evening.

Either way, travel is not advised Sunday morning and will remain icy and slippery with cold temperatures and even more frigid wind chills through early next week.

WHY DID SNOW TOTALS INCREASE A BIT? The storm is tracking a bit more north, bringing some more of the moderate snow bands to Long Island. In addition, with the temperatures dropping into the 20s, the snow becomes more powdery and that can pile up a bit quicker since it is lighter than heavier, wet snow. This is called having higher "snow ratios." I have a little more on this below.

The News 12 Storm Watch Team will keep you posted on the latest timing and snow totals all weekend long. You can see more of those details right now in the below text or above video.

While initially the snow type will be more wet, it becomes drier and more "fluffy" quickly as temperatures drop overnight Saturday night into early Sunday morning. This means it will be a manageable cleanup on Sunday and not as much of a "back-breaker" type of snow thankfully.

A brief mix of rain and snow arrives towards 8 p.m. Saturday evening.

Any mixing changes to all steady light to moderate snow before midnight.

That snow continues early Sunday morning, ending from northwest to southeast from around 8 a.m. to 10 a.m. Sunday.

Sun breaks out into the early afternoon of Sunday. Temperatures do not warm up. The snow will stick around on untreated surfaces, and it will begin to feel like the teens quickly. Plan on needing to bundle up in several layers through next Tuesday.

Wind chills will drop further, into the single digits Sunday evening and through Monday morning.

TONIGHT: Clouds build after midnight. Cold and dry with lows in the 20s. Wind: west 5 to 15 mph.

SATURDAY: Mostly cloudy with a spotty rain shower at any point in the day. Most of the day is dry. Highs will be in the low to mid-40s. Wind: southwest 10 to 20 mph.

SATURDAY NIGHT: STORM WATCH -- A brief mix of rain and snow quickly changes to all snow between around 8 p.m. and midnight. Travel becomes snow-covered and slippery quickly overnight. Please try to avoid travel, especially after midnight. Lows drop into the upper 20s to near 30 degrees.

SUNDAY: STORM WATCH (MORNING): Steady snow tapers off between around 8 a.m. and 10 a.m. A few lingering snow showers and flurries can still be possible after through around noon. Snow totals: two to four inches of snow are expected. There will be a moderate cleanup to have to do on Sunday. The snow is not going to melt right away. Highs will be around 33 degrees, but mostly be in the 20s by Sunday afternoon. It will feel frigid - like the teens quickly and like the single digits in the evening and at night. If you have Hanukkah or any plans Sunday afternoon or evening, please still use extreme caution. Icy roads will still be likely. Lows will be near 16 degrees, but it will feel like the single digits.

MONDAY: STAYING VERY COLD -- Mostly sunny with high temperatures around 30 degrees. Lows near 22 degrees.

TUESDAY: Sun and clouds. Highs around 34 degrees. Lows near 25 degrees.

WEDNESDAY: Sun and clouds. More seasonable. Any lingering snow on the ground will begin to melt more. Highs around 44 degrees. Lows near 34 degrees.

THURSDAY: Mostly cloudy and warmer with scattered rain showers. Highs around 53 degrees. Lows near 36 degrees.

FRIDAY: Sun and clouds. Highs around 45 degrees. Lows near 27 degrees.